Circuit-closer.



S. MYERS.

CIRCUIT CLOSER.

APPLICATION FILED 0m. 1. 1915.

amut:

SMYERS Patented Oct. 10,1916.

SAMUEL MYERS, OF TOWER, MICHIGAN.

CIRCUIT-61408153.

ame.

To all whom it may concern Be it known that I, SAMUEL MYERS, a citizenof the United States, residing at Tower, in the county of Cheboygan andState of Michigan, have invented certain new and useful Improvements inCircuit-Closers, of

.which the following is a specification, reference being had to theaccompanying drawings.

This invention relates to certain improvements in circuit closers and itis an object of my invention to provide a device of this generalcharacter especially designed and adapted for use in. connection withignition apparatus of explosive engines and having novel and improvedmeans whereby the closing of the circuit can be accomplished only by anauthorized person, and the present invention is an improvement on theconstruction shown in my prior Patent No.-

1,171,629, dated Feb. 15, 1916. j

The invention consists in the details of construction and in'thecombination and arrangement of the several parts of my improved circuitcloser whereby certain important advantages are attained and the deviceis rendered simpler, less expensive and otherwise more convenient andadvantageous for use, all as will be hereinafter more fully set forth.

The'novel features of the invention will be carefully defined in theappended claims.

In order that my invention may be the better understood, I will nowproceed to describe the same with reference to the accompanyingdrawings, wherein,

Figure 1 is a view, partly in elevation and partly in section, of acircuit closer constructed in accordance with an embodiment of myinvention; Fig. 2 is a sectional view taken substantially on the line 22of Fig. 1; Fig. 3 is a detail sectional view particularly illustratingthe contact arm 14 as herein included; and Fig. 4 is a View, partly inelevation and partly in section, illustrating certain details of theinvention as herein included.

As disclosed in the accompanying drawings, 1 denotes a casing ofpredetermined configuration and dimensions and preferably formed ofmetal and having produced in one face thereof the visual openings 2normallyv closed by the spring-pressed flap 3, said openings being alsopreferably permanently closed by the glass panels 4 or other transparentmateria Suitably secured within the casing 1 and to the wall thereofopposite to the wall provided wlth the openings 2 is the member 5substantially in the form of an inverted L in cross section and producedfrom a suitable non-conductive material and removably secured to saidmember 5' are' the longitudi nally arranged narrow plates-or strips 6and 7 of conductive material and from which extend the stub shafts 8 inelectrical connection with said plates 6 and 7 and rotatablySpecification of Letters Patent. Patented Get. it), 1916. I

Application filed October 1, 1915. Serial K0. 58,557.

supported upon each of said shafts 8 is "a 7 disk 9 produced of aninsulating material.

As herein disclosed, each of the disks 9 has its periphery provided witha plurality of equidistantlyspaced pockets 10 in communication at theirinner extremities with the laterally disposed recesses 11. Each of saidpockets is adapted to have removably seated therein a contact member 12,preferably a headed screw, the inner extremity of which being adaptedfor engagement with an extremity of a contact arm 14 rotatably supportedupon a shaft 8 and in electrical vconnection therewith. As hereinembodied,

the free extremity of the contact arm 14 is laterally disposed, as at15, said lateral portion being insertible within a recess 11 and havingits free extremity redrawn as indi cated at 16 to assure properengagement with the inner extremity of the contact member 12. i

The heads of the contact members 12 are disposed. above the periphery ofthe disk 9 and are preferably convex and adapted to be received withinthe jaw 17 produced in the spring plate 18 secured to the under face orshoulder of the foot of the plate 5. As herein embodied, the jaw 17 isproduced by corrugating the spring plate 18 transversely with saidcorrugatedportion offset a direction toward the disk 9 so that thecoaction between the jaw and the head of a contact member 12 serves toholdthe disk 9 normally against axial rotation. It is also to beperceived that the portion of the foot of the plate 5 immediately abovethe jaw 17 is recessed in order that the requisite flexibility may begiven to the plate'18 and in order that the plate 18 may possess suchsufiicient spring action as to eflectively maintain its engagement withthe contact member 12 I bridge said recess 19 with a supplemental flatspring 20 underlying the spring plate 18.

Disposed through the foot 21 of the plate 5 is the conductor plate 22,one extremity above the top of the foot 21 and is adapted to have anelectrical conductor a secured thereto in any way which best meets withv the necessities of practice and a second conductor b has an electricalconnection with the plate or strip 7 in any preferred manner, one ofsaid contacts a or 6 being an electrical connection with a suitablesource of supply and the second serving to carry out the current.

Each of the disks 9 is loosely mounted upon its coacting shaft 8 and iscapable of slight endwise movement thereon and the outer extremity oftheaxial opening of the disk isenlarged as at 23 and in which is positionedthe expansible member 24, herein disclosed as a conventional coilspring, surrounding the shaft 8 and bearing against the head 25 formedat the outer extremity of the shaft 8 and whereby electrical contactbetween an arm 14 and a plate 6 or 7 is assured, and in order to permitan unobstructed passage of the arm 14 across the plate Ger 7, I.interpose between said plate and arm a metallic washer 26 surroundingthe shaft 8 whereby it will be perceived that the expansible member 24assures a constant electrical contact between the arm 14, the washer 26and the plate 6 or 7.

The inner face of each of the disks 9 has secured thereto a dial 27provided with the indicia 28 coacting with the contact members 12 in amanner and for a purpose which is believed to be clearly apparent tothose skilled in the art to which my present invention appertains, andsaid indicia are adapted to be exposed through the openings 2hereinbefore referred to, and whereby an authorized person may determinewhether or not the disks have been properly manipulated in order toclose the circuit. The dials 27 are secured directly to the disks 9 andat their axial centers are provided with the stems 29 adapted toregister with additional openings 30' produced in the casing 1, saidstems having their outer extremities provided with a suitable member 31whereby the requisite axial rotation may be imparted to the disks.

From the foregoing thought to be obvious that a circuit closerconstructed in accordance with my invendescription, it is tion is of anextremely simple and comparamy invention is susceptible of some changeand modification without material departure from the princi les andspirit thereof and for this reason do not wish to be understood aslimiting myselfto the precise arrangement and formation of the severalparts herein shown in carrying out my invention in practice.

I claim:

1. A circuit closer comprising, in combination, a supporting memberhaving a laterally extending flange, the under surface of said flangebeing provided with a recess, a member rotatably mounted upon thesupporting member below the flange, a contact member carried by the diskand extending beyond the periphery thereof, a contact arm coacting withthe contact member, and a sprinig plate secured to the under surface ofthe ange of the supporting member and.

bridging the recess in said flange, the portion of the spring underlyingthe recess bein provided with a downwardly directed 0 set jaw to receivethe extended portion of the contact member.

2. A' circuit closer comprising, in com bination, a supporting memberhaving a laterally extending flange, the under surface of said flangebeing provided with a recess, a

member rotatably mounted upon the supporting member below the flange, acontact member carried by the disk and extending beyond the peripherythereof, a contact arm coacting with the contact member, a spring platesecured to the under surface of the flange of the supporting member andbridging the recess in said flange, the portion of the spring underlyingthe recess being provided with a downwardly directed offset jaw toreceive the extended portion of the contact member, and a supplementalspring underlying the first named spring and bridging the recess. 4

In testimony whereof I hereunto aflix my signature in the presence oftwo witnesses.

